390055981

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^2\times {\mathrm{157}}^1$

素因数の和:409

約数の個数: 24

約数和(自身を含む): 467457536

約数和(自身を除く): 77401555

約数列:

[1, 7, 31, 107, 157, 217, 749, 1099, 3317, 4867, 11449, 16799, 23219, 34069, 80143, 117593, 354919, 520769, 1797493, 2484433, 3645383, 12582451, 55722283, 390055981]

約数ペア:

[(1, 390055981), (7, 55722283), (31, 12582451), (107, 3645383), (157, 2484433), (217, 1797493), (749, 520769), (1099, 354919), (3317, 117593), (4867, 80143), (11449, 34069), (16799, 23219)]